summation gallop

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sum·ma·tion gal·'lop

gallop rhythm in which the gallop sound is due to superimposition of third and fourth heart sounds; sometimes heard in normal subjects with tachycardia, but usually indicative of myocardial disease.
Synonym(s): S7 gallop, S7
Farlex Partner Medical Dictionary © Farlex 2012

summation gallop

Triple gallop Cardiology An extra 'galloping' heart sound caused by tachycardia, best heard over the apex with the Pt in supine or left lateral position; it ↑ with inspiration, exercise, elevation of legs, ↑ venous return. Cf Fourth heart sound.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

sum·ma·tion gal·lop

(sŭm-ā'shŭn gal'ŏp)
Rhythm in which the gallop sound is due to superimposition of third and fourth heart sounds; sometimes heard in normal subjects with tachycardia, but usually indicative of myocardial disease.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012